a)
To graph:
a)
Answer to Problem 2CYU
Graph of both the triangles are shown as:
Explanation of Solution
Given information: A triangle JKL with vertices
Formula/Concept used: In clockwise rotation by 270 degree about a fixed point, the coordinates of fixed points remains the same and other coordinate(s)) (x,y) changes using following rule:
Calculation: Based on above rule, the coordinates of imaged vertices are:
J`(1,4),K`(-1,1),L`(-1,5)
Conclusion: Thus, the graphs of both the triangles are shown as under:
b)
To give: The vertices of imaged triangle J`K`L`
b)
Answer to Problem 2CYU
Vertices of imaged triangle J`K`L` are J`(1,4),K`(-1,1),L`(-1,5)
Explanation of Solution
Given information: A triangle JKL with vertices J(1,4),K(1,1),L(5,1)
that has to be rotated clockwise 270 degree above vertex J.
Formula/Concept used: In clockwise rotation by 270 degree about a fixed point, the coordinates of fixed points remains the same and other coordinate(s) (x,y) changes using following rule:
(x,y)→(-y,x)
Calculation: Based on above rule, on changing the x coordinate from
Conclusion: Thus, coordinates of image of triangle JKL be
Chapter 11 Solutions
Pre-Algebra, Student Edition
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